Rev.1.2
LOW DROPOUT CMOS VOLTAGE REGULATOR
S-818 Series
Load dependence of undershoot
Output capacitor (CL) dependence of undershoot
VIN=VOUT(S)+2V
V
(S)+1V,CL=2 F
VIN=VOUT(S)+2V
0.05
VOUT(S)+1V ,IOUT=30mA
→
→
µ
OUT
0.3
0.2
0.1
0
5V
0.04
0.03
0.02
0.01
0
3V
VOUT=2V
VOUT=2V
3V
5V
1.E-05 1.E-04 1.E-03 1.E-02 1.E-01 1.E+00
IOUT(A)
1
10
CL(uF)
100
VDD dependence of undershoot
Temperature dependence of undershoot
V =VOUT(S)+2V
V
OUT(S)+1V, IOUT=30mA,CL=2 F
→
µ
V =VDD VOUT(S)+1V, IOUT=30mA,CL=2 F
IN
→
µ
0.2IN
0.06
5V
0.05
0.04
0.03
0.02
0.01
0
0.15
3V
VOUT=2V
3V
0.1
0.05
0
VOUT=2V
5V
0
2
4
6
8
10
-50
0
50
100
VDD(V)
Ta(°C)
Seiko Instruments Inc.
17
SII [ SEIKO INSTRUMENTS INC ]
